Rosette
with irregularly toothed leaves, but the plant rising to 4' tall with the stem
leaves narrow and not toothed; plant parts with conspicuous long stiff hairs...
Canadian Horseweed
(Conyza candensis)

Very common
weed having leaves with large, irregular lobes and teeth, the stems rising to 4'
tall from a rosette; flower heads mostly white with a long cylindric vaselike
involucre of phyllaries (green base to the flower heads)...
Burnweed (Erechtites hieraciifolius)

Plants <
18" tall; petals yellowish, the sepals forming a husk around the flower base and
around the fruit... Husk Tomato. There are several species of
Physalis in Florida.
Physaliswalteri and
P. angustifiolia have stellate
trichomes, P. walteri throughout, and
P. angustifolia glabrous except on
the sepals. The other species have simple trichomes.
Physalis angulata has sharp teeth on the leaves.
Physalis pubescens and
P. arenicola have similar pubescent
leaves with irregular lobes and blunt teeth; the former has dark spots on the
flower, and the latter has flowers with no dark spots. There are additional
species but not likely encountered as weeds, esp. in South Florida.